Folger told Motorsport.com that he "has an offer" from Yamaha to stay as its chief tester in 2020, and that the Iwata marque is planning a "bigger" European test programme that could involve a handful of MotoGP race outings.

But he says he has to decide whether that, or racing in Moto2 full-time, is the right move.

"I have think about what's better for me: either [being] a full-time racer, or a test rider with wildcard entries, like Stefan [Bradl] does with Honda," said Folger. "That would be very tempting for me, because a lot can go wrong in Moto2.

"The risk in Moto2 is simply higher, that even if I tried everything, I might not be able to keep up with the front. Then of course it will be difficult again as a test rider.

"Now I have to decide whether I take more risks and find a Moto2 place and try to be at the front again, or if I become a test rider for Yamaha and have the opportunity to prove myself with wildcards in MotoGP two or three times a year."

Moto2 return harder than expected

In five outings with Petronas in Moto2, Folger has yet to score a point, with his best results being a pair of 17th-place finishes at Assen and the Sachsenring.

"I knew it wouldn't be easy, but I didn't think it would be so hard for me," Folger admitted. "That was a setback for me for a start.

"It's the experience I lack because I've been away from racing for too long. I have to learn the race mode again because the speed is already there, from the middle of the race to the end of the race. If I did more races, it would come back bit-by-bit."

Folger also acknowledged that he is not the Petronas' outfit top choice for a Moto2 ride in 2020, with the Malaysian outfit believed to be close to signing Valentino Rossi's half-brother Luca Marini, who currently races for the VR46 team.